# FOWIRL vs Umbra Sphere

The clearest difference is in-app purchases: FOWIRL at none against Umbra Sphere's 3. FOWIRL also leads on update cadence (every 6 days vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Umbra Sphere sells 3 one-off in-app purchases. FOWIRL asks for nothing beyond the download.

FOWIRL ships an update every 6 days, Umbra Sphere every 2 weeks. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | FOWIRL | Umbra Sphere |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (3 ratings)](https://appshunter.io/ios/app/fowirl/id6742189650/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 5 MB | 164 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Mathieu Dutour](https://appshunter.io/developer/948026273) | [劼 赵](https://appshunter.io/developer/1552332001) |

## What reviewers say

### FOWIRL

[App page](https://appshunter.io/ios/app/fowirl/id6742189650)

This app uses real-time GPS tracking to reveal your surroundings on a "fog-of-war" map. As you move, visited areas are uncovered, turning every journey into an adventure of discovery. Your travel history is stored locally for privacy and control.

**Highlights:** Fog-of-war map view, Real-time GPS tracking, Reveals visited areas, Personal map of journeys, Privacy and control, Clear history option

**In-app purchases:** none


### Umbra Sphere

[App page](https://appshunter.io/ios/app/umbra-sphere/id6753129532)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $3.99 | one-time |
| Generous Tip | $7.99 | one-time |
| Unlock All Features | $24.99 | one-time |


## Frequently asked questions

### Is FOWIRL free?

FOWIRL is free to download, with no in-app purchases.

### Is Umbra Sphere free?

Umbra Sphere is free to download, with in-app purchases available.

### Do FOWIRL or Umbra Sphere have ads?

Neither FOWIRL nor Umbra Sphere shows ads.

### Which is updated more often, FOWIRL or Umbra Sphere?

FOWIRL ships an update every 6 days, and Umbra Sphere every 2 weeks. Most recently, FOWIRL was updated on October 24, 2026 and Umbra Sphere on October 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*